Commercial metal fire door is specified with it’s steel sheet thickness and infilling. For a regular duty hollow metal door, 18Ga galvanized steel sheet is used for door slab while 16Ga galvanized steel sheet is used for door frame. Based on this basic option, steel sheet thickness will get thicker according to different requirement of duty. Also, usually for interior hollow metal doors, honeycomb paper infilling is enough for daily used, sometimes some positions will require thermal purpose then polyurethane will be another choice for infilling.
A commercial metal fire rated door will be usually equipped with better hardware. According to different position and functions, the locks will be selected with different types of functions.
Also some electrical hardware would be also selected once the position required the doors to be controlled by card or fire emergency systems.
As for the leakproofness, a commercial hollow metal doors will be installed with high standard weather stripping, door sweep, automatic bottom seal, threshold and etc.
Since the wood material is getting higher cost nowadays, hollow metal doors are getting more and more popular for more builders when then make the door plan, if you have any interest in commercial hollow metal fire doors, please contact with our sales manager for more information.
Asico Standard Hollow Metal Doors: